Ms. Duo Pan Profile

Duo Pan

at Peking Univ

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Proceedings Article | 2 December 2020 Paper

Specificity of saturated absorption spectroscopy on Cs D2 line induced by a multi-wavelength laser

Pengyuan Chang, Duo Pan, Dayong Chen, Jun Pan, Chunlai Li, Tiantian Shi, Guoqing Hu, Jin He, Jingbiao Chen

Proceedings Volume 11717, 1171717 (2020) https://doi.org/10.1117/12.2586424

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We present a study of the saturated absorption spectroscopy on cesium D2 line (6S_1/2F = 4 → 6P_3/2) induced by a multiwavelength laser and its specificity. Compared with the traditional saturated absorption spectroscopy induced by single-frequency laser, the major difference is that the peak amplitude can reach more than half of the Doppler background, and the second is that the number of the saturated absorption peaks is increased and not in the same direction, the line shape and amplitude of the spectrum change with the magnetic field. The frequency components of the multi-wavelength laser need to be studied in order to further analyze the principle of generation of the spectrum. The cesium atom laser spectroscopy induced by this unique multi-wavelength laser can be used for laser frequency stabilization. The interaction of multi-wavelength laser and atom can increase the utilization rate of the atoms, increase the signal amplitude, help to improve the signal-to-noise ratio, and then improve the frequency stability of lasers. In this experiment, the multiwavelength laser spectroscopy induced by the superposition of saturation effect, absorption effect, optical pumping effect and other physical effect is of great interest in high resolution laser spectroscopy and laser frequency stabilization.

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